Subversion Repositories HelenOS

Rev

Rev 3743 | Rev 3863 | Go to most recent revision | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3743 Rev 3817
1 
/*
 1 
/*
2 
 * Copyright (c) 2008 Pavel Rimsky
 2 
 * Copyright (c) 2008 Pavel Rimsky
3 
 * All rights reserved.
 3 
 * All rights reserved.
4 
 *
 4 
 *
5 
 * Redistribution and use in source and binary forms, with or without
 5 
 * Redistribution and use in source and binary forms, with or without
6 
 * modification, are permitted provided that the following conditions
 6 
 * modification, are permitted provided that the following conditions
7 
 * are met:
 7 
 * are met:
8 
 *
 8 
 *
9 
 * - Redistributions of source code must retain the above copyright
 9 
 * - Redistributions of source code must retain the above copyright
10 
 *   notice, this list of conditions and the following disclaimer.
 10 
 *   notice, this list of conditions and the following disclaimer.
11 
 * - Redistributions in binary form must reproduce the above copyright
 11 
 * - Redistributions in binary form must reproduce the above copyright
12 
 *   notice, this list of conditions and the following disclaimer in the
 12 
 *   notice, this list of conditions and the following disclaimer in the
13 
 *   documentation and/or other materials provided with the distribution.
 13 
 *   documentation and/or other materials provided with the distribution.
14 
 * - The name of the author may not be used to endorse or promote products
 14 
 * - The name of the author may not be used to endorse or promote products
15 
 *   derived from this software without specific prior written permission.
 15 
 *   derived from this software without specific prior written permission.
16 
 *
 16 
 *
17 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 17 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 18 
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 19 
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 20 
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 21 
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 22 
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 23 
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 24 
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 25 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 26 
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 
 */
 27 
 */
28 
 
 28 
 
29 
/** @addtogroup sparc64
 29 
/** @addtogroup sparc64
30 
 * @{
 30 
 * @{
31 
 */
 31 
 */
32 
/**
 32 
/**
33 
 * @file
 33 
 * @file
34 
 * @brief   Niagara input/output driver based on hypervisor calls.
 34 
 * @brief   Niagara input/output driver based on hypervisor calls.
35 
 */
 35 
 */
36 
 
 36 
 
37 
#include <arch/drivers/niagara.h>
 37 
#include <arch/drivers/niagara.h>
38 
#include <console/chardev.h>
 38 
#include <console/chardev.h>
39 
#include <console/console.h>
 39 
#include <console/console.h>
- 
 
 40 
#include <arch/drivers/kbd.h>
40 
#include <arch/sun4v/hypercall.h>
 41 
#include <arch/sun4v/hypercall.h>
41 
 
 42 
 
42 
/* functions referenced from definitions of I/O operations structures */
 43 
/* functions referenced from definitions of I/O operations structures */
43 
static void niagara_putchar(chardev_t *, const char);
 44 
static void niagara_putchar(chardev_t *, const char);
- 
 
 45 
static void niagara_noop(chardev_t *);
- 
 
 46 
static char niagara_read(chardev_t *);
44 
 
 47 
 
45 
/** character device operations */
 48 
/** character device operations */
46 
static chardev_operations_t niagara_ops = {
 49 
static chardev_operations_t niagara_ops = {
47 
    .write = niagara_putchar
 50 
    .write = niagara_putchar,
- 
 
 51 
    .suspend = niagara_noop,
- 
 
 52 
    .resume = niagara_noop,
- 
 
 53 
    .read = niagara_read
48 
};
 54 
};
49 
 
 55 
 
50 
/** Niagara character device */
 56 
/** Niagara character device */
51 
chardev_t niagara_io;
 57 
chardev_t niagara_io;
52 
 
 58 
 
- 
 
 59 
/** defined in drivers/kbd.c */
- 
 
 60 
extern kbd_type_t kbd_type;
- 
 
 61 
 
53 
/** Writes a single character to the standard output. */
 62 
/** Writes a single character to the standard output. */
54 
static void niagara_putchar(struct chardev * cd, const char c)
 63 
static void niagara_putchar(struct chardev * cd, const char c)
55 
{
 64 
{
56 
    __hypercall_fast1(CONS_PUTCHAR, c);
 65 
    __hypercall_fast1(CONS_PUTCHAR, c);
57 
    if (c == '\n')
 66 
    if (c == '\n')
58 
        __hypercall_fast1(CONS_PUTCHAR, '\r');
 67 
        __hypercall_fast1(CONS_PUTCHAR, '\r');
59 
}
 68 
}
60 
 
 69 
 
61 
 
 - 
 
62 
/**
 70 
/**
63 
 * Grabs the input for kernel.
 71 
 * Grabs the input for kernel.
64 
 */
 72 
 */
65 
void niagara_grab(void)
 73 
void niagara_grab(void)
66 
{
 74 
{
67 
}
 75 
}
68 
 
 76 
 
69 
/**
 77 
/**
70 
 * Releases the input so that userspace can use it.
 78 
 * Releases the input so that userspace can use it.
71 
 */
 79 
 */
72 
void niagara_release(void)
 80 
void niagara_release(void)
73 
{
 81 
{
74 
}
 82 
}
75 
 
 83 
 
76 
/**
 84 
/**
- 
 
 85 
 * Default suspend/resume operation for the input device.
- 
 
 86 
 */
- 
 
 87 
static void niagara_noop(chardev_t *d)
- 
 
 88 
{
- 
 
 89 
}
- 
 
 90 
 
- 
 
 91 
/**
- 
 
 92 
 * Called when actively reading the character. Not implemented yet.
- 
 
 93 
 */
- 
 
 94 
static char niagara_read(chardev_t *d)
- 
 
 95 
{
- 
 
 96 
    return (char) 0;
- 
 
 97 
}
- 
 
 98 
 
- 
 
 99 
/**
- 
 
 100 
 * Function regularly called by the keyboard polling thread. Asks the
- 
 
 101 
 * hypervisor whether there is any unread character. If so, it picks it up
- 
 
 102 
 * and sends it to the upper layers of HelenOS.
- 
 
 103 
 */
- 
 
 104 
void niagara_poll(void)
- 
 
 105 
{
- 
 
 106 
    uint64_t c = 50;
- 
 
 107 
 
- 
 
 108 
    if (__hypercall_fast_ret1(0, 0, 0, 0, 0, CONS_GETCHAR, &c) == EOK) {
- 
 
 109 
        chardev_push_character(&niagara_io, c);
- 
 
 110 
        if (c == '\r')
- 
 
 111 
            chardev_push_character(&niagara_io, '\n');
- 
 
 112 
    }
- 
 
 113 
 
- 
 
 114 
}
- 
 
 115 
 
- 
 
 116 
/**
77 
 * Initializes the input/output subsystem so that the Niagara standard
 117 
 * Initializes the input/output subsystem so that the Niagara standard
78 
 * input/output is used.
 118 
 * input/output is used.
79 
 */
 119 
 */
80 
void niagara_init(void)
 120 
void niagara_init(void)
81 
{
 121 
{
- 
 
 122 
    kbd_type = KBD_SUN4V;
- 
 
 123 
 
82 
    chardev_initialize("niagara_io", &niagara_io, &niagara_ops);
 124 
    chardev_initialize("niagara_io", &niagara_io, &niagara_ops);
83 
    stdin = &niagara_io;
 125 
    stdin = &niagara_io;
84 
    stdout = &niagara_io;
 126 
    stdout = &niagara_io;
85 
}
 127 
}
86 
 
 128 
 
87 
/** @}
 129 
/** @}
88 
 */
 130 
 */
89 
 
 131